Lighting fixture

Abstract

The utility model discloses a kind of lighting lamps, including first accommodating cavity, first light source component and second light source component, the first accommodating cavity is equipped with light guide hole;The first light source component is set in the first accommodating cavity;The second light source component includes optical fiber, the optical fiber is set in the first accommodating cavity outside, and the light inlet end of the optical fiber is extended to the first accommodating cavity inside by the light guide hole. The utility model can improve light utilization, and can improve illumination effect.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a lighting fixture. Background Technology

[0002] The statements herein are provided only as background information in connection with this application and do not necessarily constitute prior art.

[0003] Ceiling lights are a type of lighting fixture. Because the top of the fixture is relatively flat and the bottom is completely flush with the ceiling during installation, they are called ceiling lights. The most popular type of ceiling light on the market is the LED ceiling light, which is frequently chosen for homes, offices, entertainment venues, and various other places.

[0004] However, current ceiling lights generally only have one light source, resulting in limited and monotonous lighting effects. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a lighting fixture that can improve light utilization and lighting effect.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a lighting fixture, including a first accommodating cavity, a first light source assembly, and a second light source assembly, wherein the first accommodating cavity is provided with a light guide hole; the first light source assembly is disposed inside the first accommodating cavity; the second light source assembly includes an optical fiber, which is disposed outside the first accommodating cavity; the light-inlet end of the optical fiber extends into the first accommodating cavity through the light guide hole.

[0007] In some embodiments, the lighting assembly includes a lamp frame assembly, the lamp frame assembly including a face frame, a back plate and a diffuser plate, the back plate being connected to the upper end face of the face frame and the diffuser plate being connected to the lower end face of the face frame; the face frame, the back plate and the diffuser plate are combined to form a first receiving cavity.

[0008] In some embodiments, a second accommodating cavity is formed between the outer sidewall and the inner sidewall of the face frame; a first communication port connecting the first accommodating cavity and the second accommodating cavity is provided on the inner sidewall of the face frame; the lighting fixture further includes a power supply and a power connection cable, the power supply being built into the second accommodating cavity; one end of the power connection cable is connected to the power supply, and the other end of the power connection cable extends through the first communication port into the first accommodating cavity and is electrically connected to the first light source assembly.

[0009] In some embodiments, the inner sidewall of the faceplate is provided with a light guide hole that connects the first accommodating cavity and the second accommodating cavity; the back plate is provided with a second communication port that communicates with the second accommodating cavity; the optical fiber is disposed on the side of the back plate away from the diffuser plate and is disposed along the circumferential edge of the back plate; the light-incident end of the optical fiber extends through the second communication port into the second accommodating cavity and through the light guide hole into the first accommodating cavity.

[0010] In some embodiments, the lighting fixture further includes an optical fiber fixing component disposed within the second accommodating cavity for fixing the light-inlet end of the optical fiber.

[0011] In some embodiments, the optical fiber has two light-inlet ends and two light guide holes; the two light-inlet ends of the optical fiber extend into the first accommodating cavity through the two light guide holes respectively.

[0012] In some embodiments, a groove is formed between the faceplate and the backplate, or a groove is provided on the backplate, and the optical fiber is disposed in the groove.

[0013] In some embodiments, the width of the groove is smaller than the diameter of the optical fiber, and the height of the groove is greater than the radius of the optical fiber; the optical fiber is interference-fitted into the groove.

[0014] In some embodiments, a diffusion hood is further included, which is disposed on the side of the backplate away from the diffusion plate and along the circumferential edge of the backplate, and the optical fiber is disposed inside the diffusion hood.

[0015] In some embodiments, the upper end of the outer side wall of the face frame is provided with a bent portion; one side of the diffuser cover has an opening, one side of the opening is provided with a hook portion adapted to the bent portion, and the other side of the opening is provided with a cantilever portion; the hook portion is snapped into the bent portion, and the cantilever portion is connected to the back plate by fasteners.

[0016] In some embodiments, the number of diffusion shields is multiple, and the multiple diffusion shields are connected sequentially by corner brackets.

[0017] The beneficial effects of this utility model are as follows: by setting up an optical fiber and extending the light-inlet end of the optical fiber into the first accommodating cavity where the first light source component is located, the optical fiber can use the light emitted by the first light source component as input. When the main light source (first light source component) is lit up, the optical fiber will also light up, forming an auxiliary light source, thereby improving the light utilization rate of the main light source and improving the lighting effect of the lamp. Attached Figure Description

[0018] Figure 1 This application provides an exploded structural diagram of a lighting fixture;

[0019] Figure 2 This is a schematic diagram of the structure of a lighting fixture according to one embodiment of this application;

[0020] Figure 2 (a) is Figure 2 A magnified view of a portion of point A in the middle;

[0021] Figure 2 (b) is Figure 2 A magnified view of a portion of point A (with the back panel hidden);

[0022] Figure 3 for Figure 2 A schematic diagram of the structure after being cut along B-B';

[0023] Figure 3 (a) is Figure 3 A magnified view of a portion of point A'; Figure 4 This is a schematic diagram of the connection between the first light source assembly and the power supply according to an embodiment of this application (view from the bottom of the lamp with the diffuser plate hidden);

[0024] Figure 5 This is a schematic diagram of the structure of a lighting fixture according to an optional embodiment of this application;

[0025] Figure 6 for Figure 5 A schematic diagram of the structure after being cut along C-C';

[0026] Figure 6 (a) is Figure 6 A magnified view of a portion of point D in the middle;

[0027] Figure 7 This is a schematic diagram of the structure of a diffusion shroud according to an optional embodiment of this application;

[0028] Figure 7 (a) is Figure 7 A magnified disassembly diagram of a portion of point E in the middle.

[0029] Label Explanation:

[0030] 100. Lighting fixtures;

[0031] 1. Lamp frame assembly; 2. First light source assembly; 3. Second light source assembly; 4. Power supply; 5. Mounting plate; 6. Power connection cable; 7. Fiber optic fastener; 8. Diffuser cover; 9. Corner bracket;

[0032] 11. Face frame; 12. Back plate; 13. Diffuser plate; 14. First accommodating cavity; 15. Second accommodating cavity; 16. First connecting port; 17. Second connecting port; 18. Light guide hole;

[0033] 1101. Outer side wall; 1102. Inner side wall; 1103. Bend;

[0034] 1201, Groove;

[0035] 21. LED light strip; 31. Optical fiber; 3101. Light input end;

[0036] 801. Hook; 802. Cantilever; 803. Slot;

[0037] 901, Card Block. Detailed Implementation

[0038] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the application and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present application, not the entire structure.

[0039] Furthermore, the terms "first," "second," etc., may be used herein to describe various directions, actions, steps, or elements, but these directions, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step, or element from another. For example, without departing from the scope of this application, first information may be referred to as second information, and similarly, second information may be referred to as first information. Both first information and second information are information, but they are not the same information. The terms "first," "second," etc., should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] Please refer to Figure 1 This application provides a lighting fixture, including a lamp frame assembly, a first light source assembly, and a second light source assembly. The lamp frame assembly includes a front frame, a back plate, and a diffuser plate. The back plate is connected to the upper end face of the front frame, and the diffuser plate is connected to the lower end face of the front frame. The front frame, back plate, and diffuser plate are combined to form a first accommodating cavity. The lamp frame assembly has a light guide hole communicating with the inside and outside of the first accommodating cavity. The first light source assembly is disposed on the back plate and located inside the first accommodating cavity. The second light source assembly includes an optical fiber, which is disposed on the lamp frame assembly and located outside the first accommodating cavity. The light-incident end of the optical fiber extends into the first accommodating cavity through the light guide hole.

[0041] As can be seen from the above description, the beneficial effects of this application are as follows: by extending the light-inlet end of the optical fiber into the first accommodating cavity, when the main light source (first light source component) is lit, the light emitted by the main light source can be guided into the optical fiber, thereby allowing the optical fiber to light up, forming an auxiliary light source, improving the light utilization rate of the main light source, and improving the lighting effect of the lamp.

[0042] In some embodiments, the first light source assembly includes at least one LED strip disposed on the side of the back plate facing the diffuser plate.

[0043] In some embodiments, the back plate has a mounting groove on the side facing the diffuser plate, and the LED light strip is disposed in the mounting groove.

[0044] As can be seen from the above description, it facilitates the installation of LED light strips.

[0045] In some embodiments, a second accommodating cavity is formed between the outer sidewall and the inner sidewall of the face frame; a first communication port connecting the first accommodating cavity and the second accommodating cavity is provided on the inner sidewall of the face frame; the lighting fixture further includes a power supply and a power connection cable, the power supply being built into the second accommodating cavity; one end of the power connection cable is connected to the power supply, and the other end of the power connection cable extends through the first communication port into the first accommodating cavity and is electrically connected to the first light source assembly.

[0046] As described above, by placing the power supply within the cavity between the side walls of the faceplate, the power supply is prevented from affecting the lighting effect of the main light source.

[0047] In some embodiments, the inner sidewall of the face frame is provided with a light guide hole that connects the first accommodating cavity and the second accommodating cavity; the back plate is provided with a second communication port that communicates with the second accommodating cavity;

[0048] The optical fiber is disposed on the side of the back plate away from the diffuser plate and is disposed along the circumferential edge of the back plate; the light-inlet end of the optical fiber extends through the second communication port into the second accommodating cavity and through the light guide hole into the first accommodating cavity.

[0049] As described above, by placing the optical fiber on the back of the back panel, the direct, glaring light emitted by the optical fiber is avoided; by placing the optical fiber along the circumferential edge of the back panel, the illumination effect of the optical fiber is ensured.

[0050] In some embodiments, the lighting fixture further includes an optical fiber fixing component disposed within the second accommodating cavity for fixing the light-inlet end of the optical fiber.

[0051] As described above, by setting fiber optic fixing components, the light-inlet end of the fiber optic cable will not move or shift, thereby ensuring the light guiding effect.

[0052] In some embodiments, the optical fiber is disposed on the side of the back plate away from the diffuser plate, and the back plate is provided with a light guide hole communicating with the inside and outside of the first accommodating cavity. The light-inlet end of the optical fiber extends into the first accommodating cavity through the light guide hole.

[0053] As described above, the optical fiber can be directly inserted into the first accommodating cavity through the light guide hole set on the back plate, and can also be split from the main light source, which simplifies the structure.

[0054] In some embodiments, the optical fiber has two light-inlet ends and two light guide holes; the two light-inlet ends of the optical fiber extend into the first accommodating cavity through the two light guide holes respectively.

[0055] As described above, by setting both ends of the optical fiber as light-inlet ends, light can enter the optical fiber from both ends, ensuring the uniformity of the optical fiber's illumination and improving the optical fiber's lighting effect.

[0056] In some embodiments, a groove is formed between the faceplate and the backplate, or a groove is provided on the backplate, and the optical fiber is disposed in the groove.

[0057] As can be seen from the above description, the installation of optical fibers is facilitated by setting grooves.

[0058] In some embodiments, the width of the groove is smaller than the diameter of the optical fiber, and the height of the groove is greater than the radius of the optical fiber; the optical fiber is interference-fitted into the groove.

[0059] As described above, by interfering with the optical fiber within the groove, the stability of the optical fiber installation is ensured, and the optical fiber movement and displacement are prevented.

[0060] In some embodiments, a diffusion hood is further included, which is disposed on the side of the backplate away from the diffusion plate and along the circumferential edge of the backplate, and the optical fiber is disposed inside the diffusion hood.

[0061] As can be seen from the above description, by setting up a diffuser and placing the optical fiber inside the diffuser, the light emitted by the optical fiber can be diffused evenly.

[0062] In some embodiments, the upper end of the outer side wall of the face frame is provided with a bent portion; one side of the diffuser cover has an opening, one side of the opening is provided with a hook portion adapted to the bent portion, and the other side of the opening is provided with a cantilever portion; the hook portion is snapped into the bent portion, and the cantilever portion is connected to the back plate by fasteners.

[0063] As can be seen from the above description, the installation stability of the diffuser can be guaranteed by the above settings.

[0064] In some embodiments, the number of diffusion shields is multiple, and the multiple diffusion shields are connected sequentially by corner brackets.

[0065] In the following, the technical solutions according to this disclosure will be described with reference to specific embodiments and in conjunction with the accompanying drawings.

[0066] Figure 1 An exploded view of the lighting fixture according to an embodiment of the present invention is shown, as follows: Figure 1 As shown, the lamp 100 includes a lamp frame assembly 1, a first light source assembly 2, a second light source assembly 3, and a power supply 4, as well as a mounting plate 5 connected to the lamp frame assembly 1. In practical applications, the lamp can be mounted on a ceiling or wall using the mounting plate.

[0067] Figure 2 A schematic diagram of the structure of a lighting fixture according to an embodiment of the present invention is shown. Figure 3 It shows Figure 2 A sectional view. Combined with... Figure 1-3 As shown, the lamp frame assembly 1 includes a face frame 11, a back plate 12, and a diffuser plate 13. The back plate 12 is connected to the upper end face of the face frame 11, and the diffuser plate 13 is connected to the lower end face of the face frame 12, thereby forming a first accommodating cavity 14 with the face frame 11, the back plate 12, and the diffuser plate 13. Furthermore, in conjunction with... Figure 3 As shown in (a), a second receiving cavity 15 is formed between the outer sidewall 1101 and the inner sidewall 1102 of the face frame 11.

[0068] In some embodiments, the face frame 11 is welded from an extruded aluminum frame or from a roll-formed iron frame. In other embodiments, the face frame 11 is injection molded from plastic.

[0069] like Figure 3 As shown, the first light source assembly 2 is disposed on the back plate 12 and located in the first accommodating cavity 14, that is, disposed on the side of the back plate 12 facing the diffuser plate 13, so that the light emitted by the first light source assembly 2 can be directly incident on the diffuser plate 13 as much as possible, and then diffused out evenly through the diffuser plate 13, avoiding light efficiency loss.

[0070] Figure 4 A schematic diagram showing the connection between the power supply and the first light source assembly is provided. Figure 4 As shown, the power supply 4 is disposed within the second accommodating cavity 15. The inner sidewall 1102 of the faceplate 11 has a first connecting port 16 that connects the first accommodating cavity 14 and the second accommodating cavity 15. This allows the power connection cable 6 to pass through the first connecting port 16 to connect the first light source assembly 2 located in the first accommodating cavity 14 and the power supply 4 located in the second accommodating cavity 15, thereby supplying power to the first light source assembly 2. Specifically, one end of the power connection cable 6 is connected to the power supply 4, and the other end extends through the first connecting port 16 into the first accommodating cavity 14 and is electrically connected to the first light source assembly 2.

[0071] In some embodiments, the first light source assembly 2 includes a plurality of LED light strips 21, which are arranged in parallel on the side of the back plate 12 facing the diffuser plate 13. In an optional embodiment, the side of the back plate facing the diffuser plate has a mounting groove, and the LED light strips are disposed in the mounting groove, thereby facilitating the installation of the LED light strips. In another optional embodiment, the LED light strips are bonded to the side of the back plate facing the diffuser plate by an adhesive layer.

[0072] like Figure 2 and Figure 3 As shown, the second light source assembly 3 includes an optical fiber 31, which is disposed on the back plate 12 and located outside the first accommodating cavity 14, that is, disposed on the side of the back plate 12 away from the diffuser plate 13.

[0073] like Figure 2 (a) and Figure 3 As shown in (a), in some embodiments, the back plate 12 is provided with a second communication port 17 communicating with the second receiving cavity 15; as Figure 2 (b) and Figure 3 As shown in (a), the inner sidewall 1102 of the faceplate 11 is provided with a light guide hole 18 connecting the first accommodating cavity 14 and the second accommodating cavity 15; combined with Figure 2 , Figure 2 (a) Figure 2 (b) Figure 3 and Figure 3 As shown in (a), the optical fiber 31 is arranged along the circumferential edge of the back plate 12. The light-inlet end 3101 of the optical fiber 31 extends through the second communication port 17 into the second accommodating cavity 15, and extends through the light guide hole 18 into the first accommodating cavity 14.

[0074] In one embodiment, both ends of the optical fiber 31 are provided with light guide posts, that is, both ends of the optical fiber 31 can be used as light input ends 3101. In this case, the number of light guide holes 18 can be two, that is, two light guide holes 18 are provided on the inner sidewall 1102 of the face frame 11; the middle part of the optical fiber 31 is arranged along the circumferential edge of the back plate 12, and both ends of the optical fiber 31 pass through the second communication port 17 into the second accommodating cavity 15, and then pass through the two light guide holes 18 into the first accommodating cavity 14 respectively.

[0075] In some alternative embodiments, the light guide hole is provided on the back plate, that is, the back plate is provided with a light guide hole that connects the inside and outside of the first accommodating cavity, the optical fiber is arranged along the circumferential edge of the back plate, and the light-inlet end of the optical fiber extends into the first accommodating cavity through the light guide hole.

[0076] In one embodiment, both ends of the optical fiber are provided with light guide posts, meaning that both ends of the optical fiber can serve as light input ends. In this case, the number of light guide holes can be two, that is, two light guide holes are provided on the back plate, and both ends of the optical fiber extend into the first accommodating cavity through the two light guide holes respectively.

[0077] In other alternative embodiments, the optical fiber can also be disposed on the outer side wall of the frame. In this case, light guide holes are provided on both the outer side wall and the inner side wall of the frame. The light-inlet end of the optical fiber first passes through the light guide hole on the outer side wall of the frame and extends into the second accommodating cavity, and then passes through the light guide hole on the inner side wall of the frame and extends into the first accommodating cavity.

[0078] In one embodiment, two light guide holes are provided on both the outer and inner sidewalls of the face frame. The middle part of the optical fiber is arranged around the outer sidewall of the face frame, and the two ends of the optical fiber pass through the two light guide holes on the outer sidewall of the face frame into the second accommodating cavity, and then pass through the two light guide holes on the inner sidewall of the face frame into the first accommodating cavity.

[0079] By inserting the light-inlet end of the optical fiber into the first accommodating cavity, light emitted from the main light source (first light source assembly) can be guided into the optical fiber, thereby causing the optical fiber to illuminate and forming an auxiliary light source. By allowing light to enter from both ends of the optical fiber, the uniformity of the optical fiber's illumination can be ensured.

[0080] In some embodiments, a frosted layer may be provided on the surface of the optical fiber to improve the softness of the light.

[0081] like Figure 2 As shown in (b), in some embodiments, the luminaire further includes an optical fiber fixing member 7, which is disposed within the second accommodating cavity 15 and used to fix the light-inlet end 3101 of the optical fiber 31. In an optional embodiment, the second accommodating cavity 15 is provided with a light guide groove, the position of which corresponds to the position of the guide hole 18. After the light-inlet end 3101 of the optical fiber 31 extends into the second accommodating cavity 15, it is first embedded in the light guide groove, and then extends through the light guide hole 18 into the first accommodating cavity 14. Then, the optical fiber fixing member 7 is pressed onto the light guide groove and secured to the face frame with screws. Because the optical fiber is elastic, it can be tightly pressed into the light guide groove by the optical fiber fixing member, thereby ensuring that the light-inlet end of the optical fiber will not move or shift, thus ensuring the light guiding effect.

[0082] In some alternative embodiments, such as Figure 3 As shown in (a), a groove 1201 is formed between the outer side wall 1101 of the face frame 11 and the back plate 12, and the optical fiber 31 is disposed in the groove 1201.

[0083] In some alternative embodiments, the backplate has a groove in which the optical fiber is disposed.

[0084] In an optional embodiment, the width of the groove 1201 is smaller than the diameter of the optical fiber 31 (for example, the width of the groove 1201 is 0.2-0.3 mm smaller than the diameter of the optical fiber 31), the height of the groove 1201 is greater than the radius of the optical fiber 31 (but smaller than the diameter of the optical fiber 31), and the optical fiber 31 is interference-fitted into the groove 1201.

[0085] Figure 5 A schematic diagram of the structure of a lighting fixture according to an optional embodiment of the present invention is shown. Figure 6 It shows Figure 5 A sectional view. For example... Figure 5-6 As shown, in other optional embodiments, the luminaire further includes a diffuser 8, which is disposed on the side of the back plate 12 away from the diffuser plate 13 and is disposed along the circumferential edge of the back plate 12, and the optical fiber 31 is disposed inside the diffuser 8.

[0086] like Figure 6 As shown in (a), in one embodiment, the upper end of the outer side wall 1101 of the face frame is provided with a bent portion 1103; one side of the diffuser hood 8 has an opening facing the back plate 12, one side of the opening is provided with a hook portion 801 adapted to the bent portion 1103, and the other side of the opening is provided with a cantilever portion 802; the hook portion 801 is snapped into the bent portion 1103, and the cantilever portion 802 is connected to the back plate 12 by fasteners, for example, by screws.

[0087] In an optional embodiment, a limiting groove is provided inside the diffusion cover, and the optical fiber is placed inside the limiting groove to prevent the optical fiber from moving or shifting.

[0088] like Figure 7 As shown, in some embodiments, there are multiple diffuser covers 8, which are connected sequentially by corner brackets 9. The multiple diffuser covers are arranged to form a shape adapted to the front frame or back plate. For example, if both the front frame and back plate are square, four diffuser covers can be connected to form a square, with adjacent diffuser covers connected by corner brackets.

[0089] like Figure 7 As shown in (a), in an optional embodiment, the diffuser 8 is provided with a slot 803, and the corner bracket 9 is provided with a locking block 901. The connection between the diffuser 8 and the corner bracket 9 is achieved by locking the locking block 901 on the corner bracket 9 into the slot 803 on the diffuser 8. In practical applications, the shape of the diffuser can be customized to suit home decoration needs.

[0090] In some embodiments, the diffuser is manufactured using a plastic extrusion (plastic extrusion molding) process. In some embodiments, the diffuser material contains a diffusing agent, and the diffuser has a matte appearance, thereby enabling the light source to be diffused uniformly.

[0091] In summary, the lighting fixture provided by this utility model, by incorporating an optical fiber and extending its light-inlet end into the first accommodating cavity where the main light source is located, allows light emitted from the main light source to be guided into the optical fiber, thereby illuminating the fiber and forming an auxiliary light source. This improves the light utilization rate of the main light source and enhances the lighting effect of the fixture. By setting both ends of the optical fiber as light-inlet ends, light can enter from both ends, ensuring uniformity of the fiber's illumination and improving its lighting effect. By placing the optical fiber within a groove or diffuser, the stability of the optical fiber installation is ensured, preventing movement or displacement. Furthermore, by incorporating optical fiber fixing components, the light-inlet end of the optical fiber is prevented from shifting, thus guaranteeing the light guiding effect.

[0092] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A lighting fixture, characterized by, include: The first accommodating cavity is equipped with a light guide hole; A first light source assembly is disposed within the first accommodating cavity; as well as The second light source assembly includes: The optical fiber is disposed outside the first accommodating cavity; The light-inlet end of the optical fiber extends into the first accommodating cavity through the light guide hole.

2. The luminaire of claim 1, wherein, The lighting fixture includes a lamp frame assembly, the lamp frame assembly comprising: Face frame; A back plate, connected to the upper end face of the front frame; and A diffuser plate is connected to the lower end face of the face frame; the face frame, back plate, and diffuser plate are combined to form a first accommodating cavity.

3. The luminaire of claim 2, wherein, A second receiving cavity is formed between the outer side wall and the inner side wall of the face frame; a first connecting port connecting the first receiving cavity and the second receiving cavity is provided on the inner side wall of the face frame. The lighting fixture also includes: The power supply is built into the second accommodating cavity; and A power connection cable, one end of which is connected to the power source, and the other end of which extends through the first communication port into the first accommodating cavity and is electrically connected to the first light source assembly.

4. The luminaire of claim 3, wherein, The inner wall of the face frame is provided with a light guide hole that connects the first accommodating cavity and the second accommodating cavity; the back plate is provided with a second communication port that communicates with the second accommodating cavity; The optical fiber is disposed on the side of the back plate away from the diffuser plate and is disposed along the circumferential edge of the back plate; the light-inlet end of the optical fiber extends through the second communication port into the second accommodating cavity and through the light guide hole into the first accommodating cavity.

5. The luminaire of claim 4, wherein, The lighting fixture also includes an optical fiber fixing component, which is disposed within the second accommodating cavity and is used to fix the light-inlet end of the optical fiber.

6. The luminaire of claim 4, wherein, The optical fiber has two light-inlet ends and two light guide holes; the two light-inlet ends of the optical fiber extend into the first accommodating cavity through the two light guide holes respectively.

7. The luminaire of claim 2, wherein, A groove is formed between the faceplate and the backplate, or a groove is provided on the backplate, and the optical fiber is disposed in the groove.

8. The luminaire of claim 2, wherein, It also includes a diffusion hood, which is disposed on the side of the back plate away from the diffusion plate and along the circumferential edge of the back plate, and the optical fiber is disposed inside the diffusion hood.

9. The luminaire of claim 8, wherein, The upper end of the outer side wall of the face frame is provided with a bent portion; one side of the diffuser cover has an opening, one side of the opening is provided with a hook portion adapted to the bent portion, and the other side of the opening is provided with a cantilever portion; the hook portion is snapped together with the bent portion, and the cantilever portion is connected to the back plate by fasteners.

10. The luminaire of claim 8, wherein, The number of diffusion shields is multiple, and the multiple diffusion shields are connected in sequence by corner brackets.

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